Finding the Third Proportional to 111,913 and 245,878

Step by Step Solution

1. Step 1: Write the proportion equation
   111,913 : 245,878 = 245,878 : x
2. Step 2: Convert to fraction form
   111,913/245,878 = 245,878/x
3. Step 3: Cross multiply
   111,913x = 245,878 × 245,878
4. Step 4: Simplify right side
   111,913x = 60,455,990,884
5. Step 5: Solve for x
   x = 60,455,990,884/111,913
6. Step 6: Final answer
   x = 540,205.26